I would also bet you don't have any brick expansion joints around the house so "Mother Nature" put them in for you naturally. 

It's their nature to do so.

I think its a great idea. of course naturally be careful because of the government, illegal on a federal level. repossessions, money laundering etc. yada yada.

natural gas , or propane?      

I am an introvert by nature, but I love teaching and investing.Make it fun.  

In my area for example there are height requirements, a second method of egress (exit) and natural light in the bedroom.

This isn't my expertise AT ALL but I've seen people utilize something of this nature before. 

In retrospect it seems like a really obvious thing, however.Fannie Mae will in fact lend to a revocable living trust, provided that it's underwritten and guaranteed by a natural human person in said trust.I think it's certainly worth running the idea past a lawyer.

After you live it for a few weeks you will get the hang and it will come second nature..

I would definitely NOT do formica or anything of that nature.